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Chapter 6 Individual Projects
P13. The total human population of the earth is about 6.0 x 10^9. a. If each person has the room of a prison cell (50 sq ft), and if a square mile is about 2.8 x 10^7 sq ft, how many people could fit into a square mile? b. How many square miles would be required to accomodate the entire human population of the earth? c. If the total land area of the earth is about 5.2 x 10^7 sq mi, and if all the land area were divided equally, how many acres of land would each person be allocated (1 sq mi = 640 acres)? P14. a. Guess what percentage of the world's population could be packed into a cubical box measuring 1/2 mi on each side. [Hint: The volume of a typical person is about 2 cu ft.] b. Now calculate the answer to part a, using the earth's population as given in Problem P10. |